Each week we’re bringing you an in-depth look at one of the standard conditions we encounter and document during inspections of buildings and civil structures.
Part 11: Displacement
Displacement refers to the shifting of masonry units out of their as-built position. Displacement can occur in the vertical plane, horizontal plane, or both.
Displacement occurs in brick, stone, terra cotta, concrete units or pre-cast concrete panels when the fasteners or mortar holding a masonry unit in place can no longer resist movement from thermal expansion, frost heave, seismic events, gravity, or other forces. Displacement is therefore a symptom of several different modes of failure and deterioration, such as water infiltration, pack rust formation, or mortar failure.
Next in this series: Hollow Areas